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authorBecky Bruce <beckyb@kernel.crashing.org>2010-06-17 11:37:22 -0500
committerKumar Gala <galak@kernel.crashing.org>2010-07-16 10:55:09 -0500
commit70e02bca6bdd18e03a5e2c0265126ef277e635b3 (patch)
treed61012e76bb1f6ccdffd70ca79673abb6bf6cfd0 /arch/powerpc
parent4e63df300f05df2eb3ee87deed043a718ffc6a4e (diff)
downloadu-boot-linaro-stable-70e02bca6bdd18e03a5e2c0265126ef277e635b3.tar.gz
mpc85xx: Add print_tlbcam() function
This dumps out the contents of TLB1 on 85xx-based systems. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/cpu/mpc85xx/tlb.c20
-rw-r--r--arch/powerpc/include/asm/mmu.h1
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index eebb6ae04..f2833a5df 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -74,6 +74,26 @@ void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
}
#ifndef CONFIG_NAND_SPL
+void print_tlbcam(void)
+{
+ int i;
+ unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
+
+ /* walk all the entries */
+ printf("TLBCAM entries\n");
+ for (i = 0; i < num_cam; i++) {
+ unsigned long epn;
+ u32 tsize, valid;
+ phys_addr_t rpn;
+
+ read_tlbcam_entry(i, &valid, &tsize, &epn, &rpn);
+ printf("entry %02d: V: %d EPN 0x%08x RPN 0x%08llx size:",
+ i, (valid == 0) ? 0 : 1, (unsigned int)epn,
+ (unsigned long long)rpn);
+ print_size(TSIZE_TO_BYTES(tsize), "\n");
+ }
+}
+
static inline void use_tlb_cam(u8 idx)
{
int i = idx / 32;
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index d4c7b759f..c01c85f6d 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -486,6 +486,7 @@ extern void init_tlbs(void);
extern int find_tlb_idx(void *addr, u8 tlbsel);
extern void init_used_tlb_cams(void);
extern int find_free_tlbcam(void);
+extern void print_tlbcam(void);
extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);